On Oct. 24, 1952, a 2-year-old Hereford bull was admitted to the Stange Memorial Clinic with a history of difficult breathing for two weeks and of not eating for the past two days. Examination of the animal revealed a mucous exudate from the nostrils, and when the larynx was compressed laterally the air passage was almost completely blocked. Pressure on the larynx induced coughing. The breath had a putrid odor. Ausculation over the lungs was not revealing because of the stertorous sounds produced by the stenotic condition of the larynx.